The purpose of this study is to determine the proportion of subjects with HIV-1 RNA < 50 c/mL at Week 48 in patients who failed their first line therapy containing a non-nucleoside reverse transcriptase inhibitor (NNRTI) or an integrase inhibitor

An Open-Label Phase 3B Study in HIV-Infected Individuals With Viremia on or After Their First-Line Non-Nucleoside Reverse Transcriptase Inhibitor or Integrase Inhibitor-Based Regimen and Starting a Second-Line Regimen Consisting of ATV/RTV or DRV/RTV With an Optimized NRTI Backbone

HIV-1 infected patients with viremia (VL ≥ 500/mL) on or after their first NNRTI or INI-based cART regimen and meeting one of the two criteria below:

On 1st line Non-nucleoside reverse transcriptase inhibitor (NNRTI) or Integrase inhibitor (INI)-based Combination antiretroviral therapy (cART) with HIV-1 RNA ≥ 500 c/ML after being on the same therapy for at least 12 weeks

Off 1st line NNRTI or INI-based Combination antiretroviral therapy (cART) for at least 2 weeks after having been on antiviral therapy for at least 4 weeks and who are non-compliant and off first line cART without a history of virologic failure with resistance, with a : HIV-1 RNA ≥ 500 c/ML

At least one NRTI other than Lamivudine (3TC) or emtricitabine (FTC) with full sensitivity (one "active" NRTI) by genotype and phenotype, ie, PhenoSense Genotype (GT), report must provide a "sensitive" net assessment of susceptibility. An NRTI or PI (reported with or without ritonavir) with a "partially sensitive" net assessment will not be considered "fully sensitive"

4. Mentally able to participate in the study 5. Men and women ≥ 18 years old

Women of child bearing potential who engage in vaginal intercourse and who are not clinically sterilized must use highly effective methods of birth control during the study

Exclusion Criteria:

Screening HIV genotype showing presence at baseline of any of the following Protease inhibitor (PI) Mutation Patterns associated with genotypic resistance to Atazanavir sulfate/ Ritonavir or Darunavir/Ritonavir will lead to exclusion:

Previously demonstrated hypersensitivity to any of the components of atazanavir or the other experimental agents in this study

Darunavir contains a sulfonamide moiety. Darunavir should be used with caution in patients with a known sulfonamide allergy

History of allergy to atazanavir, ritonavir, or darunavir

History of allergy to NRTIs included as NRTI backbone options in this study

History of clinically relevant severe drug reaction

Sex and Reproductive Status:

Women with a positive pregnancy test on enrollment prior to study drug administration

Women who become pregnant during the study will be taken off-protocol

Women using a prohibited contraceptive method

Women who are breastfeeding

Other Exclusion Criteria

Prisoners or subjects who are involuntarily incarcerated

Subjects who are compulsorily detained for treatment of wither a psychiatric or physical illness

Contacts and Locations

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To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01605084